EPA Air · stack tests by county and year
Air-emissions stack tests in Coconino County, Arizona, 2023
- 3Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Coconino County, Arizona during 2023. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Coconino County facility page.
Coconino County, Arizona, 2023
- Inspections 11
Air-emissions stack tests in Coconino County, other years
Air-emissions stack tests recorded in Coconino County, Arizona, 2023
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2023-09-26 | EL PASO NATURAL GAS CO - WILLIAMS COMPRESSOR STATION | Pass | State |
| 2023-04-12 | TRANSWESTERN PIPELINE - FLAGSTAFF COMPRESSOR STATION | Pass | State |
| 2023-01-25 | EL PASO NATURAL GAS CO - WILLIAMS COMPRESSOR STATION | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.